Greco and Freestyle state has about 1500 participants. Raise the entry fee by $10 and use the $15000 to reduce costs for the Fargo trip. Also charge an additional $2 more/participant for every GR/FS ISWA tournament to collect even more for say the SB duals. I don't think $2-10 is going to stop anyone from participating knowing it will go towards a good cause. Besides much more is spent on spectator fees for family, food, candy, gas, hotel, etc. Just my 2 cents.
Also keep pushing to have ISWA clubs focus on Greco/Freestyle more.